Time series of measured I/I_c spectra (black dots) and the corresponding HaZeL fit (red lines) for the 3 May 2023 M7 event. Each image was processed by subtracting the chronologically first frame (10:33 UT, not shown here). The blue and orange arrows indicate small discrepancies in the fit that might indicate the need to include in the modeling fainter components, blueshifted or redshifted, respectively, relative to the main component.